| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative electrode for an electric device such as a Li ion secondary battery, maintaining high cycle characteristics and also having high initial capacity, thus exhibiting characteristics good in balance.SOLUTION: A negative electrode for an electric device includes: a current collector; and an electrode layer disposed on a surface of the current collector and containing a negative electrode active material, a conductive assistant and a binder. In the negative electrode for an electric device, the negative electrode active material is formed by mixing: an alloy represented by the following formula (1) (in the formula (1), M represents at least one metal selected from the group consisting of C, Nb and combinations thereof, A represents impurities, and x, y, z and a represent values in mass%, where 0<x<100, 0<y<100, 0<z<100, 0≤a<0.5 and x+y+z+a=100 are satisfied.); and a carbon-based material.SELECTED DRAWING: Figure 1 |
